Removing ASM database
I'm ready to start over from scratch, I dropped the non-ASM database, but still have an ASM database that knows about an unmounted diskgroup. But I cannot drop it because it is unmounted and I cannot mount it because it is corrupt.
What do I do to free up this ASM instance to create a new diskgroup? I'd even drop the entire ASM database but I cannot delete it via DBCA. Short of uninstalling Oracle and reinstalling and creating everything new, what can I do?